微觀經(jīng)濟理論測試題庫：tb13

1、Chapter 13Monopoly184.All monopolies exist because ofa.firms desire to maximize profits.b.failure of antitrust laws.*c.barriers to entry.d.natural selection.185.Which of the following is not a technical barrier to entry in a monopolized market?*a.A patentb.Decreasing average costc.A low cost method

2、of production known only by monopolistd.Increasing returns to scale186.A natural monopolya.is a monopoly in the production of raw materials.* b.occurs when one firm can supply the entire market more cheaply than a number of firms can.c.is one result of a patent.d.necessarily involves inefficient pri

3、cing.187.A profit-maximizing monopoly will produce that output for whicha.marginal revenue equals price.b.average cost is minimized.c.marginal cost is minimized.*d.marginal cost equals marginal revenue.188.The supply curve for a monopoly is given bya.the firms marginal cost curve above the average v

4、ariable cost curve.b.the one point on the demand curve that corresponds to the quantity for which price is equal to MC.* c.the one point on the demand curve that corresponds to the quantity for which MR equals MC.d.the entire demand curve above the point where price is equal to average cost.189.A mo

5、nopolys economic profits are represented bya.(price minus marginal cost) times number of units sold.*b.(price minus average cost) times number of units sold.c.(marginal revenue minus price) times number of units sold.d.(marginal cost minus price) times number of units sold.190.The principal differen

6、ce between economic profits for a monopolist and for a competitive firm is thata.monopoly profits create major problems of equity whereas competitive profits do not.* petitive profits exist only in the short run whereas monopoly profits may exist in the long run as well.c.monopoly profits represent

7、a transfer out of consumer surplus whereas competitive profits do not.d.monopoly profits are usually larger than competitive profits.191.If a monopoly is maximizing profits,a.price will always be greater than average cost.b.price will always equal marginal cost.*c.price will always be greater than m

8、arginal cost.d.price will always equal marginal revenue.192.The “deadweight loss” from a monopoly refers toa.the portion of a monopolists profits that are above the competitive profit level.b.the increase in price due to the monopolization of a market.c.the inefficient use of factors of production b

9、y a monopoly.* d.the loss of consumer surplus due to the monopolization of a market that is not transferred to another economic actor.193.In the real world, a monopolists costs will often bea.lower than for a firm in a competitive industry.b.equal to the costs of a firm in a competitive industry.*c.

10、higher than for a firm in a competitive industry.d.almost zero.194.For the practice of price discrimination to be successful, the monopoly must *a.be able to prevent resale of its product.b.face similar demand curves for various markets.c.have similar costs among markets.d.have a downward-sloping ma

11、rginal cost curve.195.A price discriminating monopolist having identical costs in two separated markets should charge a higher price in that marketa.that has a higher demand.b.that has a more elastic demand.*c.that has a less elastic demand.d.that has a higher marginal revenue.196.Perfect (first deg

12、ree) price discriminationa.is a common occurrence in situations with many buyers.b.occurs fairly often in situations with only a few buyers.c.is only observed in competitive markets.* d.rarely occurs because firms do not have sufficient power to differentiate among specific buyers.197.All of the fol

13、lowing might explain a firm offering quantity discounts except:a.lower costs of handling large orders.* b.an inelastic demand for the good.c.monopoly power in this market.d.adoption of a sales maximization strategy.198.Relative to single price policy third-degree price discriminationa.always reduces

14、 welfare.b.always increases welfare.c.may increase welfare if total output falls.* d.may increase welfare if total output rises.199.A monopoly producer of a durable gooda.can earn even greater profits than a producer of a non-durable.* b.must consider competition from its own output decisions.c.will

15、 have higher marginal costs than most other monopolies.d.will not set marginal revenue equal to marginal cost.200.If the government requires a natural monopoly to price at marginal cost,a.monopoly firms will earn zero economic profits because the price of the good equals the cost of producing that g

16、ood.* b.monopoly firms will operate at a loss because P AC.c.more firms will be able to enter the ducer surplus will increase because quantity supplied is greater.201.One possible benefit of a monopoly isa.a more efficient allocation of resources; only one firm is needed to supply quantity demanded.* b.greater opportunities for research due to long-run positive economic profit